Bubble cap



C. L. HAYNES July 8, 1952 BUBBLE CAP 2 SHEETS-SHEET 1 Filed July 6, 1948 July 8, 1952 c. L. HAYNEs 2,602,652

BUBBLE CAP Filed July e, 194e 2 SHEETS-SHEET z Patented July 8, 1952 BUBBLE CAP Charles L. Haynes, Flintrdge, Calif., assignor to C. F. Braun & Co., Alhambra, Calif., a corporationnf California Application July 6, 1948, SerialNo. 37,2341

A furtherobjectlof'thisinvention is to provideav bubble cap and Vriser assembly having Aa novel form of riser.

A. vmore detalledobject is. to provide a device ofthe character described in. which the holddown yoke servesas' ameans to center the bubble cap on theupstandingfriser.

vOther objects and advantages will.l appear hereinafter.

f In the drawings:

Figure.. 1 is 'a 'partial plan view of a bubble column. tray showing a number of bubble cap and riser assemblies'in position on the tray.

Figure 2 is a planview on an enlarged scale partly'broken away showing a cap and riser assembly embodying my invention mounted' in position onitheltray. l

Figure 3 is a sectional elevation taken substantiallyonV the lines 3-3 as shown in Figure 2.

Figure 4 is a side elevation partly in section taken substantially onthelines 4--41 as shown in Figure 2.

Figure 5 is aA perspective view of the riser.

Figure 6 is a sectional elevation showing. a modified .form of my invention.

Figure 7 is a sectional elevation showing a fur.

tliervmodieation.

Figure 8 is` a. top plan View ofthe riser shown inFigurefT.

Referring to the drawings, the bubble column tray I may support a large number oi bubble cap` and riser assemblies Il. Each of these assemblies includes va riser IZ and arbubblecapv I3 maintained in assembled relation on the tray IU -by a hold-down element Hl. The cap I3 may be provided with the usual ngers I extending v.circumferentially' around the lower portion of the cap I3v anddenin'g between. them a plurality or slotsflliifv The cap I3 and fingers I5 are adapted' t'o beformedv as a metal stamping, fabricated from a flatv sheet of material. A central opening.

d Thislinventionrelatesto bubble. cap and riserv Il is provided-in the upper-flangeV I8v` of vthe cap'l3.

Y The riser I2 is also adapted to be formed fromv a metal stamping, fabricated from a ilat sheet,

l. and includes a downwardly extending circular pilot rim I9 whichA isy adapted to extend -into a circular opening 2U provided in the tray plate I0. A radial shoulder 2I extends outwardly from'the wall of the riser I2 at alocation adjacent the pilot rimr I9. This shoulder 2l may be provided by a separate ring secured to the riser or, as. shown in the-drawings, may be integrally formed by upsetting the riser in an axial direction to provide-anA integral shoulder. As clearly shown' in Figure 5 the'riser I2 is formed as a cup ele ment with the bottom of the cup including the bridge 22. Segments are removed*v from the bottom-of the cupY to formthe openings 23 on each side ofthe bridge 22.l Thecentral upper surface 24 of the bridge 22 provides al supporting abutment for the under side'oi theflange IS-of thev bubble cap I3. An elongated opening 25' in the bridge 22Y is positioned'to register `withfthe opening II' in the bubble cap flange I8.

`Means. are-provided; for securing the bubble cap and riser assembly in position on tlietray plate I0, and as shown in the drawingsthis means includes lthe hold-down element or yoke III. This element may be. formed from aJ-'singleA length of metal havinga pair' of oppositely'di.- rected hooks or "feet 2'61 at :the 'lower' end.l The feet 26 are carried onadownwardly extending shanks 21 which divergey from parallel vertical sections 2.8.fo'rmln`g .part ofthe upper end of the hold-down yoke I4. The sections 28 are joinedv by the integral curved bent section 29 'to form a loop. The upper.' part of th'ey'oke element: I4 is thus conduplicate shape'and forms the leg of an inverted Y, the diverging 'shank's formingithe arms thereof. The preferred form' of hold-:down element asv shown in Figure 4 is thus shaped after the manner of a Wishbone.. A wedge-shapedy key- 30 extends through the space denedbetween the sections' 28.v The lower edge of the key 30 rests on the nange I8 of the bubble cap I3 and the upper slopingv edge v3| engages under the bent section 29. From lthis description it will be understood that lateral movement of the key 3B in the direction of the `arrow 32 asshown in'Figure' 3 serves to raise the hold-down yoke I4 andaefie'ct engagement of the feet 26 with the under side of the tray plate I0. The parallel sections 28 of the yoke' It extend through theelongated opening 25 inthe riser bridge 22 and through the opening-I1 inthe bubble-cap flange I8. :Accordingly, the yoke I4 acts to center the bubble cap I3 with respect to the riser I2.

Suicient clearance 33 is provided adjacent the feet 26 to clear the lower extending edge oi the pilot rim I3 so that the feet engage the under side of the tray plate I0.

The upper portions of the parallel sections 2B of the yoke I4 may be laterally crimped or deformed as shown at 33 after the upper end of the yoke has been extended through the opening 25. These lateral projections 33 prevent the yoke I4 from dropping through the opening 25, but since the opening I1 is larger than the opening 25 the projections 33 do not prevent installation` or removal of the bubble cap I3. The projections 33 serve to provide a lost-motion connection between the riser I2 and yoke I4 which permits a limited degree of relative sliding movement between them while preventing their complete separation.

The bubble cap and riser assembly may be installed from the upper side of the tray plate I3 without requiring any assistance from a man positioned below the tray plate. The riser I2 and yoke I4 comprise a unitary assembly. The feet 26 of the yoke may be inserted through the opening 20 by tilting the yoke and riser I2 before the riser is seated on the tray plate IB. The lateral projections 33 prevent the yoke from falling through the opening 25. The pilot rim I9 on the riser is then inserted into the opening 20, and the bubble cap I3 is installed over the upwardly projecting end of the yoke I4. The bubble cap I3 is then automatically centered by the upper portion of the yoke I4 and rests on the bridge 22 of the riser I2. The key 30 is then inserted between the parallel segments 28 and moved laterally by any convenient means such as, for example, by a hammer applied to the large end 34 of the key 30. The bubble cap I3 and riser I2 are then conned against upward movement relative to the plate I0. When thus installed, gases passing upwardly through the interior of the riser I2 iiow outwardly through the openings 23 and downwardly around the outside of the riser I2 and out through the slots I6 between the fingers I5.

When it is desired to remove the assembly for inspection, cleaning, or repair, or for other reasons, the key 30 is removed by moving it in a direction opposite to that indicated by the arrow 32. The bubble cap I3 is removed upwardly and the riser I2 is moved upwardly away from the tray plate I and then tilted to` permit the feet 26 of the yoke I4 to pass upwardly through the opening 20 in the tray plate I0. Both installation and removal of the bubble cap and riser assembly are accomplished from the upper side of the tray plate I0.

While the riser I2 and cap I3 haveY been shown and described as being cylindrical in form, it will be recognized that other shapes may also be used. For example, a rectangular opening may be provided in the tray plate to receive a rectangular box-shaped riser and the shape of the cap I3 may be modified accordingly.

In the modification shown in Figure 6 the riser 40 is provided with a separate ring 4| which rests on rthe tray plate I0. The ring 4I may be attached by any convenient means such as, for example, by brazing or by welding. A pilot rim 42 projects downwardly through the opening 20 in the tray plate III and may be provided with diametrically opposed notches 43. The lower ends 44 of the yoke member 45 extend through these notches 43 so that relative rotation of the yoke 45 and riser 43 is prevented. The bubble cap 46 rests on the riser bridge 4'! in the same manner as described in connection with Figures 1 to 4. The yoke 45 may be formed from a round bar and is split at one end to form the Shanks 48 and feet 44. A portion of the yoke above the split is threaded as shown at 4S to receive the nut 50.

A section 5I of reduced diameter is provided above the threaded portion 49 and the extreme upper end of the yoke is enlarged to form an abutment 52 which prevents the nut 5i) from being withdrawn from the yoke 45. The nut 5@ is installed after the threaded portion 49 and reduced section 5IV have been formed7 and the abutment 52 is upset to the shape illustrated afterl the'nut is in position on the threads 49. The abutment 52 provides a lost-motion connection similar to that afforded by the projections 33 described above.- The-bubble cap andriser assembly as shown in Figure 6 may be assembled and removed from the upper side of the tray plate I0. Assembly is accomplished by position-l ing the nut adjacent .the abutment 52 so that the threaded portion 49 may extend below the riser bridge 4l and so that the feet 44 extend below the lower limit of the pilot rim 42. The assembly may be then tilted sufciently to move the yoke feet 44 through the tray opening 23 and intol position under the tray plate I0. Theriser pilot rim 42 is then inserted'within the opening 29 to allow the ring 4| to rest on the upper surface oi-y the tray platev I3. During this assembly operation the yoke 45 cannot fall through the bubble cap 4S and riser 4I) because the nut 53 engages the abutment 52. When the riser and bubble cap are in position the nut 50 is threaded on the yoke portion 49 to bring the feet 44 into engagement with the lower surface of the tray plate I3. Turning of the nut doesnot rotate the yoke 45 because such rotation is prevented bythe the same as those described in connection with- Figures 1 to 4. The bubble cap 68 may be pro-l vided 4with iingers and open-ended slots as shown in Figure ,4, and may be provided with a series of slots E3 closed at their lower ends as shown in Figure 7. This modified form of my invention may also be assembled and removed from the upper side of the tray plate B0, and the manner of assembly and removal is substantially the same as that described in connection with Figures 1 to 4,

Having fully described my invention, it is to bev understood that I do not wish to be limited to the details herein set forth, but my inventionis ofy the full scopeof the appended claims.

I. claim: v

l'. In a bubble cap and riser assembly for an apertured tray plate, the combination of a riser adapted to rest on the tray plate and having a pilot rim extending downwardly into an aperture provided in the tray plate; an apertured bridge The riser 63 is ared at its lower endasili/.liable ha -ltacts adapted to engage-theiund'erside oft annalisa doubled at a midpoint to -forma loop, the'loop extending upwardlyfthrough the bridgeanjd flange tol center the-i bubble capA on, the` riser, the yoke-having yeli ergingfzshanks providedwith-hook-shapedconpiateifandfawedge-cooperating with the@ A* g lamping'the riserand b bblecap with fgzspect tothe`tray2platee v 2. In a bubble cap and riser assembly for an apertured tray plate, the combination of a, riser adapted to rest on the tray plate and having a pilot rim extending downwardly into an laperture provided in the tray plate; an apertured bridge formed integrally on the upper end of the riser; a bubble cap having an apertured flange resting on the riser bridge; a hold-down yoke com-V prising a single length of material doubled at a midpoint to vform a loop, the loop extending upwardly through the bridge and ange to center the bubble 'cap on the riser, the yoke having diverging Shanks provided with hook-shaped contacts adapted to engage the underside of the tray plate; means adapted to prevent disassembly of the yoke and riser; and a wedge cooperating with the loop for clamping the riser and bubble cap with respect to the tray plate.

3. In a bubble cap and riser assembly for an apertured tray plate, the combination of a riser adapted to rest on a tray plate and to communicate with an aperture formed therein, the riser having an upstanding wall and a supporting bridge extending diametrically across the riser at the upper end thereof, the bridge having a central opening, pilot means on the riser extending into the aperture to center the riser with respect to the aperture; a hold-down element slidably extending through the opening in the riser bridge; projecting means on the upper portion of the hold-down element engageable with the riser bridge to prevent separation of the riser and hold-down element, said hold-down element being insertable downwardly through said aperture and having legs provided with laterally spaced contacts engaging the underside of the tray plate; a bubble cap supported on the riser bridge; and' means engaging said hold-down element and bubble cap for clamping the riser and bubble cap downwardly onto the tray plate.

4. In a bubble cap and riser assembly for an apertured tray plate, the combination of a riser adapted to rest on a tray plate and having 'pilot means extending into an aperture provided therein, the riser having an upstanding wall and a supporting bridge extending diametrically across the riser at the upper end thereof, the bridge having a central opening; a bubble cap having an apertured flange resting on the riser bridge; a hold-down yoke having an upper portion slidably received in said opening and acting to center the bubble cap on the riser; projecting means on said upper portion of the yoke engageable with the riser bridge to prevent separation of the riser and yoke, the yoke being Yinsertable downwardly through the tray plate aperture while theriser yoke: @emprise `6 'ap'ertured"Itray` plate; th combination og-i-azr-iseadapte@ to restona traypnteana. immunitaire with` an apertu're'zvr formed" thereir-ujaY bu ble cap SU-Iiportedon-,the riser;kv a hold-down yoke-'having elfoiwnv,v-ai-'ll'yY dvergingflefgs andeanupwardiy ex."- tending" ste-rn "portioni" nsaidHyolteextending tl-ir'ough4A saldi riserA and bubble' cap with thel stem portion thereof projecting upwardly above 'said bubble jaar, means Ieuidinesaidgsi' m. ,portionfor vertiil, Sliding.' movement relative ,'Saiibubbie @ab and riser: Stop-means'adiaceitithe'uppereiid ofv saidV stem portionand'fixed-` thereto` to limit downwardslidingmovement of said yoke and prevent removal thereof from said riser; the lower ends of said legs being shaped to extend through said aperture and engage the underside of said tray-plate; and moveable' means engageable with the upper surface of said bubble cap and with the projecting portion of said stem portion to draw said yoke lupwardly and clamp said assembly to said tray plate.

6. An assembly as defined in claim 5 wherein said moveable means comprises a camming element.

'7. An assembly as dened in claim 5 wherein said stem portion is of inverted U-shape having spaced apart legs, said moveable means comprising a wedge-shaped camming element extending between said spaced apart legs and engaging the bight of said U-shaped stem portion and bearing on said bubble cap.

8. An assembly as defined in claim 5 wherein said yoke comprises a single length of material doubled at its midpoint to form a loop, the loop comprising said stem portion and said moveable means comprising a wedge extending through said loop above said bubble cap.

9. An assembly as defined in claim 5 wherein said yoke comprises a bar element split for a portion of its length to form said diverging legs, the portion of the bar which is not split constituting said stem portion and having a threaded section above said bubble cap, said moveable means comprising a nut engaging said threaded section.

10. An assembly as defined in claim 5 wherein the lower end of said riser extends into said aperture, and a shoulder means on said riser abutting the upper surface of said tray plate adjacent said aperture. y

11. An assembly as defined in claim 5 wherein said tray plate is provided with an upwardly directed flange about the periphery of said aperture, said flange extending into said.. riser and serving to center the same over said aperture.

12. An assembly as dened in claim 5 wherein said riser is provided with a bridge extending diametrically across the upper end thereof, said bubble cap being supported on said bridge, said means guiding said stem portion comprising an opening through said bridge with said stem portion extending therethrough.

13. In a bubble cap and riser assembly for an apertured tray plate, the combination of a riser adapted to rest on a tray plate and communicate with an aperture formed therein; a bubble cap supported on the riser; a hold-down yoke having downwardly diverging legs and an upwardly extending stem portion; said yoke extending through said riser and bubble cap with the stem portion thereof projecting upwardly above said bubble cap; means guiding said stem portion for vertical sliding movement relative to said bubble cap and riser; shoulder means adjacent the upper end of said stem portion and xed thereto; the lower ends of said legs being shaped 7 8 toextend through said aperture and engage the REFERENCES JITILI)V l u under 51de of Said tray plate; movable means en' The following references are of record in the gageable with the upper surface of said bubble me of this patent: Y -V cap and having a rst portion engageable with the projecting portion of said stem to draw said 5 vUNITEDSKYPE-:S` PATENTS yoke upwardly and clamp said assembly to said Number 1 Name i Date tray plate; said movable means having a second 1,796,256 Y Seeland Mar. 10, 1931 portion engageable with said shoulder means 1,873,137 Laird Aug. 23,1932 when. said movable means is moved to yoke- 2,338,928 lGlitsch' Y Jan. 11, 1944 releasing position to thereby limitV downward 10 2,438,536 Cairns 1----, Mar. 30,1948 sliding movement of ysaid yoke and prevent re. .2,443,812 Ackroyd June 23, Y1948 Inovalthereof from said riser. y 2,480,862 Johnson Sept. V6, .1949

Y )CHARLES L. HAYNES. y 

